diff --git a/src/projected_grpo/train.py b/src/projected_grpo/train.py
index fe39c47..3957992 100644
--- a/src/projected_grpo/train.py
+++ b/src/projected_grpo/train.py
@@ -559,11 +559,25 @@ def main(cfg: Config) -> int:
     # lp_s, lp_t are mean per-token gen_logp by source. Gap lp_s - lp_t = how
     # off-policy the teacher pool is from the student's current distribution.
     # No IS correction is applied to the loss; this is diagnostic only.
+    # Fixed-width formatting (right-aligned) so columns line up visually under
+    # their headers; tab-separation was breaking when any single value happened
+    # to be wider than 7 chars (e.g. a 4-digit "sec" or 5-char "ref_eq").
+    _col_w = {
+        "step": 4, "ref_eq": 6, "rew": 6, "rew_s": 6, "std": 5, "sprd": 4, "N": 3,
+        "gt":   6, "gt_s":   6, "gt_t":  6, "hack":  6, "hack_s": 6, "hack_t": 6,
+        "lp_s": 6, "lp_t":   6,
+        "loss": 8, "cin":    6, "cin_s": 6, "cin_t": 6, "cout":   6, "fired":  5,
+        "gen":  5, "fb":     4, "t_rew": 5, "sec":   4,
+    }
     _row_cols = ["step", "ref_eq", "rew", "rew_s", "std", "sprd", "N",
                  "gt", "gt_s", "gt_t", "hack", "hack_s", "hack_t",
                  "lp_s", "lp_t",
                  "loss", "cin", "cin_s", "cin_t", "cout", "fired",
                  "gen", "fb", "t_rew", "sec"]
+    def _fmt_row(cells: dict) -> str:
+        return "  ".join(f"{str(cells[c]):>{_col_w[c]}}" for c in _row_cols)
+    def _fmt_header() -> str:
+        return "  ".join(f"{c:>{_col_w[c]}}" for c in _row_cols)
     REF_GENS_PER_STEP = 16 * 16  # ariahw/rl-rewardhacking config.py:num_prompts * num_generations
     est_gens_per_step = cfg.prompts_per_step * cfg.group  # before mixed-pool split
     logger.info(
@@ -572,7 +586,7 @@ def main(cfg: Config) -> int:
         f"this run's {steps} steps ~= {steps * est_gens_per_step / REF_GENS_PER_STEP:.1f} reference steps."
     )
     logger.info("")
-    logger.info("row\t" + "\t".join(_row_cols))
+    logger.info("row  " + _fmt_header())
     logger.info("")
 
     OUT_DIR.mkdir(exist_ok=True)
@@ -986,7 +1000,7 @@ def main(cfg: Config) -> int:
         }
         rows.append(row)
         # Stream this step as TSV row (header was printed before the loop).
-        logger.info("row\t" + "\t".join(str(row[c]) for c in _row_cols))
+        logger.info("row  " + _fmt_row(row))
         if (step + 1) % 25 == 0:
             save_ckpt(rows)  # survive early kills; ~12 days for the full sweep
         if not first_hack_saved and hack_s_n > 0: